Speaker cable with Long-Grain Copper conductors in a double spiral pair
AudioQuest Rocket 11 is a loudspeaker cable that gathers four Semi-Solid Concentric conductors of Long-Grain Copper (LGC) inside a single jacket, arranged as two spiralled pairs. It is offered with two terminations, Full-Range and Single Bi-Wire, and in four lengths. Sold as a pair, one cable for the right channel and one for the left.
The design targets two typical weaknesses of speaker cables: interaction among the strands of a single conductor, and the high inductance of layouts where the conductors lie parallel.
Semi-Solid Concentric LGC conductors
In ordinary stranded cable every strand keeps shifting position inside the bundle, and the electrical and magnetic interaction among strands produces distortion. In Semi-Solid Concentric conductors the strands hold a fixed arrangement along the whole run, so the effect is clearly reduced. Compared with standard OFHC copper, LGC contains fewer oxides and fewer impurities and has a lower number of grain boundaries, which means less distortion arising from the structure of the metal.
Double Spiral-Pair geometry and insulation
Within each half of the cable the two conductors are wound around each other. Against conductors laid side by side, inductance is lower, which helps clarity and extension from the bass up to the treble. The insulation is PVC and every conductor is Direction-Controlled, that is, oriented according to the directionality of radio-frequency noise.
Terminations and lengths
The Full-Range version has two connectors at each end and suits loudspeakers with a single pair of binding posts. The Single Bi-Wire version leaves the amplifier with two connectors and reaches the loudspeaker with four, feeding the bass and treble posts separately on speakers designed for bi-wiring. Available lengths: 2 m, 2.5 m, 3 m and 4 m.
Key features
- Conductors: Semi-Solid Concentric, in LGC copper
- Geometry: low-inductance Double Spiral-Pair
- Insulation: PVC
- Noise control: Direction-Controlled conductors
- Versions: Full-Range or Single Bi-Wire, in 2 m, 2.5 m, 3 m or 4 m
